Oakbrook Preparatory School
Built on a foundation of Christian faith, Oakbrook Preparatory School educates students to be independent learners in a changing world.
Oakbrook Preparatory School at a glance
- Total assets
- $7,048,705
- -4.9% vs 2024
- Revenue (2025)
- $6,311,296
- +18.0% vs 2024
- Net investment income (2025)
- $16,090
- +154.8% vs 2024
- Expenses (2025)
- $6,812,694
- +11.9% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Oakbrook Preparatory School funds
How this funder distributes its grants
Grant Size Distribution
1 grant across all recorded years
The most common grant size was in the $500K–1M range: 1 grant of 1 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
In 2021 it made 1 grant totaling $559K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Small Business Admin Washington, DC | Coronavirus Aid CARES | $559,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $7,048,705 | $6,311,296 | $6,812,694 | — | — | $16,090 |
| 2024 | $7,415,417 | $5,347,143 | $6,088,895 | — | — | $6,314 |
| 2023 | $8,360,022 | $5,770,286 | $5,873,235 | — | — | $13,205 |
| 2022 | $8,729,986 | $5,805,707 | $5,509,653 | — | — | — |
| 2021 | $8,250,772 | $5,149,988 | $4,912,443 | $559,000 | 1 | — |
| 2019 | $8,456,510 | $5,502,941 | $5,254,185 | — | — | $706 |
About Oakbrook Preparatory School
Based on IRS filings
Oakbrook Preparatory School is a public charity, based in Spartanburg, SC. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $7.0M in total assets. Net investment income was $16K.
Leadership & Key People
Officers and directors from IRS filings
Oakbrook Preparatory School is led by Gabe O'Sullivan, Board Chair on every filing since 2024; 2 of 12 officers listed in 2025 are compensated.
Officers on the 2025 filing
Gabe O'Sullivan
Board Chair
On filings since 2024
2 hrs/week
No compensation reported
Jessica Coker
Finance Chair
On filings since 2024
2 hrs/week
No compensation reported
Alicia Womick
Interim Coexec Director
New on the 2025 filing
40 hrs/week
$97K (2025)
Amanda Ledbetter
Interim Coexec Director
New on the 2025 filing
40 hrs/week
$99K (2025)
Karen Canup
Board Member
Director → Board Member, 2024
On filings since 2019
2 hrs/week
No compensation reported
Kim Land
Board Member
Director → Governance Chair, 2024
Governance Chair → Board Member, 2025
On filings since 2019
2 hrs/week
No compensation reported
Lee Ann Ballew
Vice Chair
Board Member → Vice Chair, 2024
On filings since 2021
2 hrs/week
No compensation reported
Martin Wildeman
Board Member
On filings since 2021
2 hrs/week
No compensation reported
Bryan Lawson
Board Member
Board Member → Bg Chair, 2024
Bg Chair → Board Member, 2025
On filings since 2023
2 hrs/week
No compensation reported
Danielle Cuthbertson
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Edward Jabbour
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Tara Weese
Board Member
On filings since 2024
2 hrs/week
No compensation reported
Former officers (17)
- Former: Kyle Boyles (2019–2024) — Head of School
- Former: Geoff Haas (2019–2023) — Board Chair
- Former: Lisa Armbruster (2019–2023) — Board Member
- Former: Randy Kibler (2019–2023) — Board Member
- Former: Brent Babb (2021–2023) — Treasurer
- Former: Cameron Fant (2021–2023) — Vice Chair
- Former: Hank Jolly (2021–2023) — Board Member
- Former: Mike Kirkland (2021–2023) — Board Member
- Former: Brooks Moss (2023) — Board Member
- Former: Nigel West (2019–2022) — Board Member
- Former: Beth Patterson (2019) — Director
- Former: Bob Caldwell (2019) — Director
- Former: Cindy Walia (2019) — Director
- Former: David Foy (2019) — Business Manager
- Former: Doug Grindle (2019) — Chair
- Former: John Lindsell (2019) — Head of School
- Former: Pat Froemming (2019) — Director
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $99K, to Amanda Ledbetter (Interim CoExec Dir). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Oakbrook Preparatory School
How large is Oakbrook Preparatory School?
Oakbrook Preparatory School reported $7.0M in total assets on its 2025 IRS Form 990. Its revenue that year was $6.3M.
Where does Oakbrook Preparatory School operate?
Oakbrook Preparatory School has awarded grants in District of Columbia.
What is Oakbrook Preparatory School's EIN?
Oakbrook Preparatory School's EIN (Employer Identification Number) is 57-0921126. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2019 (received by the IRS June 23, 2020)
- Updated Form 990 for fiscal year 2021 (received by the IRS November 16, 2021)
- Added Form 990 for fiscal year 2025 (received by the IRS May 15, 2026)
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Figures come from Oakbrook Preparatory School's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Oakbrook Preparatory School down — hundreds of funders to go?